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प्रश्न
Fill in the blank
The nature of oxide Al2O3 is ____
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उत्तर
The nature of oxide Al2O3 is amphoteric.
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संबंधित प्रश्न
Draw an electron dot diagram to show the formation of each of the following compounds:
Magnesium Chloride
[H = 1, C = 6, Mg = 12, Cl = 17]
Give one word or phrase for the following:
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of element A is more than that that of element C.
Fill in the blank
Noble gases have ______ electron affinity.
Explain
Halogens have high electron affinity.
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electron affinity of elements in groups 1 to 7:
The electron affinity of an element X is greater than that of element Y.
How is the electronegativity of X likely to compare with that of Y?
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element A would probably have ______ electron affinity than B.
